Having Diffraction Grating Means Patents (Class 356/328)
  • Patent number: 11333649
    Abstract: A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: May 17, 2022
    Assignee: Flying Gybe Inc.
    Inventor: Ivan Lalović
  • Patent number: 11327086
    Abstract: A sample measuring method of optically measuring a sample housed in a container in a sample measurement device, the method including: loading the container such that the container is shielded from light; starting to read information regarding a measurement to be performed on the sample in response to the loading the container; and measuring the sample based on the read information.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: May 10, 2022
    Assignee: SYSMEX CORPORATION
    Inventors: Tomoyuki Nose, Sayuri Tomoda, Yusuke Miida, Kazuyoshi Horii, Kenichiro Suzuki
  • Patent number: 11320369
    Abstract: In one embodiment, an agricultural sampling apparatus is provided. The apparatus comprising: a wave emitter; a wave transmitter configured to direct the waves from the wave emitter as a plurality of linewise waves to irradiate surface points of the agricultural sample; a dispersive element configured to receive waves arriving from the sample and deflect the arriving waves in at least two directions depending upon the wavelength of an arriving wave; and a detector configured with a plurality of detection elements disposed in at least two dimensions, the detector configured to convert the waves arriving from the dispersive element to a signal.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: May 3, 2022
    Assignee: DEERE & COMPANY
    Inventors: Georg Kormann, Wolfram Haiges, Peter Schade, Nico Correns, Bernhard Fischer, Fred Grunert
  • Patent number: 11314079
    Abstract: Provided is an optical deflector that detects an arbitrary deflection angle of a mirror part while avoiding the increase in the length of an optical sensor for detection of the deflection angle. An optical deflector 3 comprises: a mirror part 30 that has a flat reflection surface 38 and a grooved reflection surface 39, each of the flat reflection surface 38 and the grooved reflection surface 39 reflecting an incident light; and an actuator 32a to 32d that reciprocally turns the mirror part 30 about a rotation axis 36. The grooved reflection surface 39 has a plurality of longitudinal grooves 41 that extends parallel to the rotation axis 36. Each longitudinal groove 41 has a facing inclination surface 42a, 42b that is parallel to the rotation axis 36 and that has at least an opening-side portion of a facing inclination surface of a V-groove.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: April 26, 2022
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Mamoru Miyachi
  • Patent number: 11307021
    Abstract: A positioning unit mountable on a moving object includes at least one light source measuring unit and a processor. The light source measuring units have high directional sensitivity along a first axis and low directional sensitivity along a second axis orthogonal to the first axis to capture relative angular information of the moving object with respect to a plurality of simultaneously active stationary light sources located at multiple locations in a space. The processor determines positioning information of the moving object at least from the output of the at least one light source measuring unit. Each light source measuring unit includes an optical arrangement and a linearly configured imaging sensor to receive light from the stationary light sources through the optical arrangement.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: April 19, 2022
    Assignee: Six Degrees Space Ltd
    Inventors: Daniel Greenspan, Klonymus Sholom Lieberman
  • Patent number: 11296798
    Abstract: There is a photovoltaic (PV) panel 10 including an array of photovoltaic (PV) elements (12). Each PV element (12) is stand alone and can be electronically addressed individually. The PV panel (10) also includes a number of spectral filters (14), in this example, a red filter (14r), a green filter (14g) and a blue filter (14b) arranged over some of the PV elements (12) to filter out the red, green and blue spectral components from white (combined red, green and blue) light emitted from a red-green-blue (RGB) transmitter. Data can be transmitted by modulating the spectral components of the RGB transmitter such that the data in each of the spectral components can be recovered from the electrical signal generated by the PV elements (12).
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: April 5, 2022
    Assignee: The University Court of the University of Edinburgh
    Inventors: Stefan I. Videv, Harald Haas, Sovan Das
  • Patent number: 11280717
    Abstract: Methods and apparatuses for identifying contaminants in a semiconductor cleaning solution, including: contacting a semiconductor cleaning solution with a semiconductor manufacturing component to form an effluent including one or more insoluble analytes-of-interest; contacting the effluent including one or more insoluble analytes-of-interest with an optical apparatus configured to sense fluorescence and, optionally, Raman signals from the one or more insoluble analytes-of-interest, wherein the apparatus includes an electron multiplying charged couple device and a grating spectrometer to spectrally disperse the fluorescence and project the fluorescence on to the electron multiplying charged couple device; and identifying the one or more analytes of interest.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: March 22, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Prerna Goradia, Avishek Ghosh, Robert Jan Visser
  • Patent number: 11268901
    Abstract: A collection system of a semiconductor metrology tool includes a chuck to support a target from which an optical beam is reflected and a spectrometer to receive the reflected optical beam. The collection system also includes a plurality of aperture masks arranged in a rotatable sequence about an axis parallel to an optical axis. Each aperture mask of the plurality of aperture masks is rotatable into and out of the reflected optical beam between the chuck and the spectrometer to selectively mask the reflected optical beam.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: March 8, 2022
    Assignee: KLA Corporation
    Inventors: Barry Blasenheim, Noam Sapiens, Michael Friedmann, Pablo Rovira
  • Patent number: 11268853
    Abstract: The present invention discloses a multichannel broadband high-resolution spectrograph, comprising a plurality of light source incident slits, a multichannel integrated grating, a multichannel shared two-dimensional focus imaging mirror and a two-dimensional area array detector which are sequentially disposed along a light source incident or reflection line, wherein the multichannel integrated grating consists of a plurality of sub-gratings, incident light enters the corresponding integrated gratings along the light source incident slits and then is focused by the shared two-dimensional focus imaging mirror after diffraction of the integrated grating, and diffraction light in a full-spectrum region is incident onto a focal plane of the two-dimensional area array detector for detection. No any mechanical displacement part is disposed, multichannel, full-spectrum and high-speed detection and analysis is achieved, and the present disclosure has high spectrum resolution and working reliability.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: March 8, 2022
    Inventors: Liangyao Chen, Songyou Wang, Haibin Zhao, Yuxiang Zheng, Rongjun Zhang, Yuemei Yang, Jianke Chen, Anqing Jiang
  • Patent number: 11268854
    Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 8, 2022
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Amir Arbabi, Andrei Faraon, Ehsan Arbabi, Hyeonsoo Park
  • Patent number: 11262293
    Abstract: System and method for use in optical monitoring of a sample. The system comprising: a light source unit (140) for providing collimated illumination; polarization modulation unit (160) located in optical path of light propagating from the light source unit; a lens unit (120) for focusing light onto an illumination spot on a surface of a sample, and for collection of light components returning from the sample; a light collection unit configured for collecting light returning from the sample and generate output image data associated with Fourier plane imaging with respect to surface of the sample; and a control unit (500) configured processing said data in accordance with said system calibration.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 1, 2022
    Inventor: Ralfy Kenaz
  • Patent number: 11262237
    Abstract: A spectral analysis device is provided herein. The spectral analysis device includes a first lens, a transmission grating, a lens set and a sensing element. The first lens is configured to receive and converge an incident light beam into a first light beam. The transmission grating is configured to disperse the first light beam into a plurality of second light beams. The lens set is configured to receive the plurality of second light beams. The sensing element includes a substrate and a plurality of pixels. The plurality of pixels is configured to respectively receive the plurality of second light beam. Such structure is used to analyze the spectrum of incident light.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: March 1, 2022
    Assignee: Chang Gung University
    Inventors: Meng Tsan Tsai, Tai Ang Wang, Cheng Yu Lee
  • Patent number: 11243115
    Abstract: Systems and methods for determining one or more properties of a sample are disclosed. The systems and methods disclosed can be capable of measuring along multiple locations and can reimage and resolve multiple optical paths within the sample. The system can be configured with one-layer or two-layers of optics suitable for a compact system. The optics can be simplified to reduce the number and complexity of the coated optical surfaces, et al. on effects, manufacturing tolerance stack-up problems, and interference-based spectroscopic errors. The size, number, and placement of the optics can enable multiple simultaneous or non-simultaneous measurements at various locations across and within the sample. Moreover, the systems can be configured with an optical spacer window located between the sample and the optics, and methods to account for changes in optical paths due to inclusion of the optical spacer window are disclosed.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: February 8, 2022
    Inventors: Mark Alan Arbore, Gary Shambat, Matthew A. Terrel
  • Patent number: 11231362
    Abstract: A system includes a light source, a Fourier transform infrared reflectometer (FTIR) spectrometer, and broadband reflectometer optics. The system is configured to measure polarized light and unpolarized reflectivities in a wavelength range from 2 ?m to 20 ?m. The light source can be a laser-driven light source. The spectroscopic reflectometer can include a single channel or two channels.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 25, 2022
    Assignee: KLA Corporation
    Inventors: Guorong V. Zhuang, Shankar Krishnan, David Y. Wang, Xuefeng Liu, Mengmeng Ye, Dawei Hu
  • Patent number: 11231319
    Abstract: Configurations for a diffraction grating design that mitigates thermal wavelength shifts and corresponding methods thereof are disclosed. The wavelength stability monitoring system may include a planar waveguide that receives input light directed toward a diffraction grating. The diffraction grating may reflect the light back through the planar waveguide and to one or more detectors. The planar waveguide may include multiple materials, such as a first material and a second athermal material that is adjacent to the first material. The athermal material may mitigate thermal wavelength shifts of the light. The design of the athermal material may include targeting a ratio of the input and output path lengths across sets of input and output angles of light that pass through the first material and the second athermal material. In some examples, the output waveguides may be positioned to receive leakage modes of light.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: January 25, 2022
    Assignee: Apple Inc.
    Inventors: Yongming Tu, Alfredo Bismuto
  • Patent number: 11219927
    Abstract: A system and method of sorting mineral streams, for example laterite mineral ores, into appropriately classified valuable and waste streams for maximum recovery of value from the mineral stream, e.g., a stream of minerals includes receiving response data indicating reflected, absorbed or backscattered energy from a mineral sample exposed to a sensor, where the mineral sample is irradiated with electromagnetic energy. The system determines spectral characteristics of the mineral sample by performing spectral analysis on the response data of the mineral sample and identifies a composition of the mineral sample by comparing the spectral characteristics of the mineral sample to previously developed spectral characteristics of samples of known composition. The system then generates a sort decision for the mineral sample based on the comparison, where the sort decision is used in diverting the mineral sample to a desired destination e.g. pyrometallurgical treatment stages, or to a waste stream.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: January 11, 2022
    Assignee: MineSense Technologies Ltd.
    Inventors: Andrew Sherliker Bamber, Nicholas Barcza, Andrew Csinger
  • Patent number: 11221322
    Abstract: A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: January 11, 2022
    Assignee: Flying Gybe Inc.
    Inventor: Ivan Lalović
  • Patent number: 11207870
    Abstract: An optical window for an imaging system such as a Raman spectrometer, NIR spectrometer, fluorometer, or hyperspectral camera is configured to contact the subject. It includes: a substrate; and a flexible medium, where the flexible medium is configured to be deformed with substantially the same profile as that of the outer surface of the subject. The refractive index of the flexible medium and substrate is selected such that light collection efficiency and/or imaging quality returned to the measurement system increases after application of the optical window.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 28, 2021
    Assignee: OAK ANALYTICS INC
    Inventors: Ruibo Wang, Pawel Adam Menzfeld, James Frederick Gass
  • Patent number: 11201314
    Abstract: Embodiments of this invention relate to and, more particularly, to solid state lighting, digital displays, conversion of electrical energy to light, low onset gain saturated stimulate emission, light production with high efficiency and high output per area, and light production while limiting material degradation, and may also be applied in optical or quantum information processing and networking. Embodimenta of this invention comprise spectroscopic configurations having a radiative transition to a depopulated state and an optical configuration having sufficient Q such that the combination allows onset of gain saturation with a small excited state population or low current density, thus enabling production of light in a mode with near total output coupling, high efficiency, high output, low roll-off and attenuation of losses and degradation processes.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: December 14, 2021
    Inventor: Mitchell C. Nelson
  • Patent number: 11193824
    Abstract: Methods, devices and systems provide improved spectral imaging and detection and can be implemented as compact, light-weight and low-cost devices. An example device includes a mask that includes a plurality of apertures and positioned to receive light from an object of interest. A first lenslet array is positioned to receive light that passes through the plurality of apertures. Each lenslet of the first lenslet array receives the light from a corresponding aperture and produces collimated light that is incident on a dispersive element, such as a diffraction grating or a prism, which produces a plurality of spectrally separated components. A second lenslet array receives the spectrally separated components and focuses each of the spectrally separated components onto an image plane, where a sensor is located. The information obtained from the sensor can be used to determine or analyze spectral characteristics of the object, which can be in gaseous form.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: December 7, 2021
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventor: Rongguang Liang
  • Patent number: 11187582
    Abstract: Hyperspectal imagers including reflective and transmissive metasurfaces are disclosed. The described metasurfaces are used collectively to disperse and focus light of different wavelengths and incident angles on a focal plane. The disclosed devices are compact and light, and can be used in systems and applications requiring stringent form factors.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: November 30, 2021
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: MohammadSadegh Faraji-Dana, Ehsan Arbabi, Andrei Faraon
  • Patent number: 11181420
    Abstract: Described are an apparatus and a method for manufacturing a three-dimensional body comprising mutually oriented devices. In accordance with the invention, a substrate having a first and a second substrate region is provided. A first device is provided in the first substrate region. A second device is provided in the first or in the second substrate region. The substrate is bent along at least one bending edge in order to obtain a three-dimensional body. In accordance with the invention, the first device and the second device are oriented to each other by the bending in order to provide a communications path between the same.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 23, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Heinrich Grueger, Jens Knobbe, Tino Puegner
  • Patent number: 11173638
    Abstract: A molded product production system includes a powdery material mixing and feeding device configured to feed mixed powdery materials including at least two types of powdery materials, a filler configured to fill, with the mixed powdery materials fed by the powdery material mixing and feeding device, a die bore of a compression-molding machine, a sensor configured to measure a mixing degree of the mixed powdery materials fed by the powdery material mixing and feeding device, and a molded product removal mechanism configured to distinguish a molded product obtained by compression molding mixed powdery materials having a mixing degree measured by the sensor out of a predetermined range from a molded product obtained by compression molding mixed powdery materials having a mixing degree within the predetermined range.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: November 16, 2021
    Assignee: KIKUSUI SEISAKUSHO LTD.
    Inventors: Naoshige Kitamura, Jun Oyama, Masaoki Murakoshi
  • Patent number: 11169024
    Abstract: An echelle spectrometer includes a slit opening for incoming light, a collimator which collimates a diverging beam of light generated through the slit, a reflective echelle grating which disperses the collimated light along a first dimension; a cross-disperser which disperses at least a portion of the collimated light in a second dimension orthogonal to the first dimension to create a two-dimensional spectral field-of-view; and an imaging system which images the two-dimensional spectral field-of-view onto a detector; wherein the imaging system comprises primary, secondary, and tertiary tilted mirrors, where each of the tilted mirrors comprises a freeform, rotationally non-symmetric surface shape.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: November 9, 2021
    Assignees: University of Rochester, PerkinElmer Health Sciences Canada, Inc.
    Inventors: Jannick Rolland-Thompson, Aaron Bauer, Dennis Yates, Mahsa Farsad
  • Patent number: 11162842
    Abstract: The invention relates to an optical system, to a spectrometer device comprising such optical system and to a method to operate such an optical system comprising an entrance aperture for entering primary light containing both a first, lower wavelength range and a second, higher wavelength range into said optical system, a grating for spectral dispersion of the primary light beam into a first fan of diffracted light within the first wavelength range and a primary zero order light beam, a mirror element suitably positioned to reflect the primary zero order light beam back as secondary light beam to the grating where it is dispersed into a second fan of diffracted light within the second wavelength range, a detector arrangement with detectors, an absorber element to be reversibly placed within the primary zero order light beam, and a filter element to be reversibly placed within the primary light beam.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: November 2, 2021
    Assignee: HITACHI HIGH-TECH ANALYTICAL SCIENCE GMBH
    Inventors: Marzena Beata Rak, Rainer Simons
  • Patent number: 11131608
    Abstract: A target analyte is extracted out of a sample fluid in a sample fluid passage by diffusing the target analyte through a supported liquid membrane to a product fluid passage. Extraction of the target analyte is accelerated by applying an electric field across and perpendicular to the supported liquid membrane with electrodes. Passage of selected ions across an exchange membrane extending between one of the electrodes and the supported liquid membrane is inhibited.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 28, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Viktor Shkolnikov, Anita Rogacs
  • Patent number: 11112231
    Abstract: A reflectometer or ellipsometer integrated with a processing tool includes a source module configured to generate a input beam, and a first mirror arranged to receive the input beam. The first mirror is configured to collimate the input beam and direct the input beam toward an aperture plate. The aperture plate has at least two apertures. One of the at least two apertures is arranged to define a measurement beam from a portion of the input beam, and one of the at least two apertures is arranged to define a reference beam from a portion of the input beam. An optical element is arranged within an optical path of the reference beam and outside an optical path of the measurement beam. The optical element is configured to direct the reference beam toward a third mirror. A second mirror is arranged to receive the measurement beam and focus the measurement beam through a window and onto a surface of a sample. The window forms part of a chamber of the processing tool and the sample is disposed within the chamber.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: September 7, 2021
    Assignee: Applied Materials, Inc.
    Inventor: Guoheng Zhao
  • Patent number: 11114816
    Abstract: A structured light system may include a semiconductor laser to emit light and a diffractive optical element to diffract the light such that one or more diffracted orders of the light, associated with forming a structured light pattern, are transmitted by the diffractive optical element. The diffractive optical element may be arranged such that the light is to be incident on the diffractive optical element at a substantially non-normal angle of incidence. The substantially non-normal angle of incidence may be designed to cause the diffractive optical element to transmit a zero-order beam of the light outside of a field of view associated with the diffractive optical element.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 7, 2021
    Assignee: Lumentum Operations LLC
    Inventors: Vincent V. Wong, Yonghong Guo, Jay A. Skidmore
  • Patent number: 11092494
    Abstract: A spectrometer, such as a Raman spectrometer, adapted for analyzing a complex sample is provided. In an example implementation, the spectrometer may be able to determine one or more spectral characteristics of an inner subsurface layer or region of a complex sample (e.g., contents of a container). In one embodiment, for example, A spectrometer includes an excitation source configured to provide an excitation signal; an optical system configured to direct the excitation signal toward a sample and receive a spectroscopy signal from the sample. The optical system may include a spatial filter configured to separate or isolate at least one first portion of the spectroscopy signal from at least one second portion of the spectroscopy signal and pass the at least one first portion of the spectroscopy signal. A detector is configured to determine at least one spectral feature of the at least one first portion of the spectroscopy signal.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: August 17, 2021
    Inventors: Keith T. Carron, Shane A. Buller, Mark A. Watson, Sean Patrick Woodward
  • Patent number: 11085821
    Abstract: A spectrometer and a spectral detection and analysis method implemented by the spectrometer. The spectrometer includes an optical device and a detection device. The optical device includes at least one light filter, each of which including at least two light filtering units, so that the optical device can emit at least two kinds of monochromatic light. The detection device includes at least one detector, each of which comprising at least two detection units facing at least two light filtering units in the corresponding light filter in a one-to-one relationship. The monochromatic light emitted from the light filtering unit is emitted along the direction perpendicular to the direction of the light emitting surface.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: August 10, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xianqin Meng, Wei Wang, Jifeng Tan, Xiaochuan Chen, Xiandong Meng, Jian Gao, Fangzhou Wang
  • Patent number: 11067444
    Abstract: A spectroscope includes a light source, at least one static optical element for manipulating or structuring light, at least two adaptive optical elements and at least one detector. The at least two adaptive optical elements are configured to partition an optical function of spectral sorting from at least one of the following optical function: routing, attenuation, and/or encoding. The light source, the at least one static optical element, and the at least two adaptive optical elements are configured to direct light from the light source into first and second distinct light channels, the first light channel containing a sample to be analyzed.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: July 20, 2021
    Inventor: Sean M. Christian
  • Patent number: 11060912
    Abstract: A multi-stage parallel spectroscopy system has a plurality of dispersion stages, with the output of one dispersion stage serving as input to the next dispersion stage. Each dispersion stage separates input radiation into respective spectral components along a respective dispersion axis. In embodiments, the dispersion axes for the dispersion stages are substantially parallel to each other. Thus, the disclosed systems may be considered single-axis parallel spectroscopy configurations, in contrast to cross-axis parallel spectroscopy configurations. An optical system disposed in an optical path between dispersion stages can spatially filter a set of wavelengths from the input to the next dispersion stage to increase spectral extinction without sacrificing throughput or parallel operation.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: July 13, 2021
    Assignee: UNIVERSITY OF MARYLAND, COLLEGE PARK
    Inventors: Giuliano Scarcelli, Antonio Fiore
  • Patent number: 11054308
    Abstract: Observation light can be applied to a position for measurement without providing large space in a spectrophotometer, and the position for measurement can be easily known. A slit is disposed at a position optically conjugate with the position for measurement in the spectrophotometer. Light from an object to be measured passes through the slit, travels along a measurement optical path, and is subject to wavelength dispersion by a wavelength dispersing element. An observation light source is retracted outside the measurement optical path at the time of measuring a spectral spectrum. At the time of observing the position for measurement, the observation light source is inserted into the measurement optical path, and emits observation light toward the slit. Alternatively, light from an object to be measured passes through the slit, and is diffracted by a grating. The observation light source is disposed on an optical path of zeroth light.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: July 6, 2021
    Assignee: Konica Minolta, Inc.
    Inventors: Takashi Kawasaki, Hidehiko Fujii, Katsutoshi Tsurutani
  • Patent number: 11022494
    Abstract: Apparatus for measuring spectra from one or more samples, the apparatus including a reference waveguide that receives illuminating radiation used to illuminate at least one sample, at least one sample waveguide that receives sample radiation at least one of reflected from and transmitted through a respective sample, an optical system that spatially distributes radiation from each of the waveguides based on a frequency of the radiation, and focuses radiation from the optical fibres into an imaging plane and an imaging device that captures an image of the focused and spatially distributed radiation from the imaging plane so that the image includes respective spectra from each of the waveguides.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: June 1, 2021
    Assignee: Commonwealth Scientific and Indsutrial Research Organisation
    Inventors: Stephen Gensemer, Tim Malthus
  • Patent number: 11022793
    Abstract: A fiber scanning projector includes a piezoelectric element and a scanning fiber mechanically coupled to the piezoelectric element. The fiber scanning projector also includes an optical assembly section operable to receive light from the scanning fiber. The optical assembly section includes a prism element, a collimating element coupled to the prism element at an interface, a quarter wave plate, and a polarizing beam splitter disposed at the interface.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: June 1, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Brian T. Schowengerdt, Mathew D. Watson, Charles David Melville, Samuel Scott Frank
  • Patent number: 11002607
    Abstract: An apparatus includes an optical detector configured to detect at least a portion of incoming radiation. The apparatus also includes an optical component configured to provide at least the portion of the incoming radiation to the optical detector. The apparatus further includes at least one flexure that mounts the optical component to the optical detector. Each flexure is configured to deform in response to expansion or contraction of at least one of the optical component and the optical detector. Each flexure may include a side surface that is flexible in a first dimension and rigid in second and third dimensions, where the dimensions are orthogonal to each other. The optical component may include at least one of a filter, a lens, a polarizer, an aperture, and a cover.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 11, 2021
    Assignee: Raytheon Company
    Inventors: Stephen Marinsek, Thomas P. Sprafke, Richard J. Peralta
  • Patent number: 10989653
    Abstract: A color imaging system and method, the method comprising, for a plurality of predetermined wavelength bands of illumination, calculating weight coefficients representing the contribution of each of the wavelength bands to a specific color space, individually controlling illumination intervals of each of a plurality of illumination sources, wherein each of the illumination sources is configured to provide illumination via a waveguide in a different predetermined narrow band of wavelengths, controlling an image sensor to capture a set of monochromatic image frames synchronously with the illumination intervals, receiving a set of the captured monochromatic image frames, and generating color image data by calculating a combination of the set of image frames, each weighted by the corresponding coefficient.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 27, 2021
    Inventor: Omri Warshavski
  • Patent number: 10983002
    Abstract: The invention relates to a spectrometer comprising a housing (11) equipped with a planar optical grating (2), which is arranged opposite an aperture (1) of the housing (11) and which is aligned at an angle of less than 45° to a normal of the aperture (1), a lens assembly (6), and a sensor element (7). The aperture (1) is dimensioned such that electromagnetic radiation incident parallel to the normal of the aperture (1) completely irradiates the surface of the optical grating (2). The lens assembly (6) is arranged between the optical grating (2) and the sensor element (7) in order to focus the electromagnetic radiation onto the sensor element (7) such that solely a first order of diffraction or higher orders of diffraction of the electromagnetic radiation diffracted by the optical grating (2) is directed towards the lens assembly (6) and the sensor element (7).
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 20, 2021
    Assignee: ANVAJO GMBH
    Inventor: Stefan Fraedrich
  • Patent number: 10976478
    Abstract: An optical imaging system employing a device containing a sequence of first (pre-dispersor) and second (main) volume holograms configured to operate as a sequence of optical diffractive elements possessing different blazing curves. A pre-cursor hologram has a thickness smaller than the thickness of the following, disperser hologram, and a comparatively broad spectral selectivity as compared to that of the main hologram, allowing the pre-cursor to diffract light in transmission within a very large range of the angles of incidence. The use of the combination of the pre-cursor and the main holograms not only implements selective imaging of the chosen target object at every angle at which various portions of the object are seen at the optical system, but also facilitates the spectroscopic measurements of such object.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 13, 2021
    Assignee: Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Pierre Alexandre Blanche, Eric C. Pearce
  • Patent number: 10976194
    Abstract: The present disclosure provides an imaging optical system. In one aspect, the imaging optical system includes, among other things, a light bending element configured to substantially separate electromagnetic radiation into at least two portions, and configured to redirect the at least two portions of said electromagnetic radiation into substantially different directions.
    Type: Grant
    Filed: June 6, 2020
    Date of Patent: April 13, 2021
    Assignee: Wavefront Research, Inc.
    Inventor: Thomas A. Mitchell
  • Patent number: 10924716
    Abstract: An image projection device includes: an optical component reflecting an image light beam that has been converted into a substantially parallel light by a lens and scanned by a scanner; a projection mirror irradiating a retina with the reflected image light beam; a light beam blocking unit located on a light path between the scanner and the lens and having an aperture, wherein the projection mirror has a first region and a second region having a larger light condensing power than the first region, and a light condensing power in a third region, reflecting a light beam to be emitted to the first region of the scanned image light beam, of the optical component is greater than that in a fourth region, reflecting a light beam to be emitted to the second region of the scanned image light beam, of the optical component.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 16, 2021
    Assignee: QD LASER, INC.
    Inventors: Makoto Suzuki, Kinya Hasegawa
  • Patent number: 10900831
    Abstract: A spectroscopic measurement apparatus includes a light emitter simultaneously emitting light including light having all wavelengths in a wavelength range from 400 nm to 700 nm to a measurement target, a light disperser dispersing a reflected light reflected by the measurement target to a predetermined wavelength, a light receiver that receives the light dispersed by the light disperser and outputs a second light reception amount indicating a light intensity of the received light, and a calculator that receives the second light reception amount of each wavelength and calculates a reflection spectrum when the measurement target is irradiated with light, in which the calculator calculates reflectance of a predetermined wavelength using the second light reception amounts of a plurality of wavelengths.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 26, 2021
    Inventor: Tsugio Gomi
  • Patent number: 10900836
    Abstract: A reflectometer has a depth sensor which obtains distance information between the depth sensor and an object, a light source which emits light having a calibrated light spectrum, a spectral sensor which collects spectral information from light reflected from the object, and a circuitry. The circuitry calculates a reflectance spectrum for the object based on the distance information and the spectral information collected from light being reflected from the object, wherein the light originates from the light source.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 26, 2021
    Assignee: SONY CORPORATION
    Inventors: Alexander Gatto, Piergiorgio Sartor, Ralf Müller
  • Patent number: 10891455
    Abstract: A controlled image sample is obtained of a produce item. The controlled image sample may be captured using an integrated camera of a mobile device or by a specialized produce image meter from a handheld scanning device. The image sample is processed to obtain a produce signature that is unique to a type of produce associated with the image sample. The produce signature is matched to a specific produce identifier and the produce identifier is added to a list of items being purchased by a shopper through a self-shopping system.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: January 12, 2021
    Assignee: NCR Corporation
    Inventor: John Crooks
  • Patent number: 10876888
    Abstract: An optical spectrometer arrangement is provided. According to an example, the optical spectrometer arrangement comprises a linear array detector for receiving light at a predefined range of wavelengths, a point detector for receiving light at a predefined wavelength that is outside said predefined range of wavelengths, and an arrangement of a collimating optical element, a diffracting optical element, and a focusing optical element that are arranged to provide at least a first optical path that guides incoming light at said predefined range of wavelengths to the linear array detector via the collimating optical element, the diffracting optical element and the focusing optical element, and a second optical path that guides incoming light at said predefined wavelength to the point detector via the collimating optical element, the diffracting optical element and one of the collimating optical element and the focusing optical element.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 29, 2020
    Assignee: Hitachi High-Tech Analytical Science Limited
    Inventors: Tuomas Pylkkanen, Esa Raikkonen
  • Patent number: 10876887
    Abstract: A spectroscopic detector includes a light source, a flow cell, a diffraction grating, a diffraction grating drive unit, an optical sensor and a diffraction grating position adjustment unit. The diffraction grating drive unit is configured to adjust a rotation position of the diffraction grating within a range that light of a specified wavelength region of plus side diffracted light and light of the specified wavelength region of minus side diffracted light among diffracted light caused by the diffraction grating is selectively guided to the flow cell. The diffraction grating position adjustment unit is configured to adjust the rotation position of the diffraction grating unit in order to selectively guide one of the light of the specified wavelength region of the plus side diffracted light and the light of the specified wavelength region of the minus side diffracted light among the diffracted light caused by the diffraction grating.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: December 29, 2020
    Assignee: Shimadzu Corporation
    Inventor: Hiroyuki Minato
  • Patent number: 10859439
    Abstract: An imaging system, and method of its use, for viewing a sample surface at an inclined angle, preferably in functional combination with a sample investigating reflectometer, spectrophotometer, ellipsometer or polarimeter system; wherein the imaging system provides that a sample surface and multi-element imaging detector surface are oriented with respect to one another to meet the Scheimpflug condition, and wherein a telecentric lens system is simultaneously positioned between the sample surface and the input surface of the multi-element imaging detector such that an image of the sample surface produced by said multi-element imaging detector is both substantially in focus over the extent thereof, and such that substantially no keystone error is demonstrated in said image.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 8, 2020
    Assignee: J.A. WOOLLAM CO., INC.
    Inventors: Martin M. Lihardt, Ping He, Galen L. Pfeiffer
  • Patent number: 10802184
    Abstract: A diffraction grating comprises a substrate (with index nsub) with a surface facing an optical medium (with index nmed<nsub), a dielectric or semiconductor layer of thickness t on the substrate surface (with index nL?nsub), and a set of diffractive elements on the layer (with index nR?nmed). The diffractive elements comprise a set of ridges protruding into the optical medium, which fills trenches between the ridges, and are characterized by a spacing ?, a width d, and a height h. Over an operational wavelength range, ?/2nsub<?<?/(nsub+nmed). An optical signal incident on the diffractive elements from within the substrate at an incidence angle exceeding the critical angle, nsub, nmed, nL, nR, ?, d, h, and t result in wavelength-dependent, first-order diffraction efficiency of the grating greater than a prescribed level over the operational wavelength range for both s- and p-polarized optical signals.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: October 13, 2020
    Assignee: II-VI Delaware Inc.
    Inventors: Christoph M. Greiner, Thomas W. Mossberg, Dmitri Iazikov
  • Patent number: 10801956
    Abstract: The invention relates to the field of surface waves based optical devices particularly tuneable optical filter, optical biosensors and spatial light modulators. An optical sensor and tuneable filter is disclosed based on high contrast periodic structures deposited on a substrate and using a compact reading method for low detection limit using a one dimensionally diverging quasi-monochromatic beam and a camera.
    Type: Grant
    Filed: August 21, 2016
    Date of Patent: October 13, 2020
    Assignee: PHOTONICSYS LTD.
    Inventor: Ibrahim Abdulhalim
  • Patent number: 10782186
    Abstract: A monochromator 100 includes: a diffraction grating 2 placed within a housing 1 so as to receive light from an entrance 11 and disperse the light into a spectrum from which a component of light having a set wavelength is to be extracted through an exit 12; an optical filter 92 to be removably inserted between the grating and the exit to remove light within a specific wavelength band which is out of the set wavelength; a rotary drive 5 for rotating the grating using a stepping motor; a wavelength-movement information setter 73 which sets wavelength-movement information to be used for rotating the grating from an original position to a rotational position corresponding to the set wavelength; and a wavelength-movement controller 71 which controls the rotary drive to initially rotate the grating to the original position and subsequently rotate it to the aforementioned rotational position based on the wavelength-movement information.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 22, 2020
    Assignee: SHIMADZU CORPORATION
    Inventor: Tomoari Kobayashi